The video box uses Iframe code so that it fits at the very top of the post. So when you need to delete the video, you need to delete (2) things, Here’s how…
- First, at the right top you will see "screen options". Click on it and make sure "Custom Fields" is checked
- Then empty "Video URL"
- Then scroll down to custom fields & delete "iframe" code
- Then save the post
SEE VISUALS BELOW;